Articles in this series
Denormalization in SQL is the process of restructuring a normalized database to improve performance, at the cost of introducing redundancy into the...
In database normalization, the Third Normal Form (3NF) is a property of a relation in a relational database. A relation is in 3NF if: It is in Second...
Second Normal Form is one of the stages in the normalization process used in relational database design. A table is said to be in 2NF if it meets the...
The First Normal Form (1NF) is one of the fundamental rules or guidelines to design a relational database. A table is considered to be in 1NF if: It...
Data integrity ensures the accuracy, consistency, and reliability of data stored in a database. In SQL, there are four main types of data integrity...
In SQL, referential constraints are used to ensure the integrity of data between tables. This is most commonly achieved using Foreign Key constraints,...
